JournalsemVol. 63, No. 3Elemente der MathematikVolume 63, No. 3 (2008)pp. 109–117Euclid, Calkin & Wilf — Playing with rationalsJörn SteudingStefanie HofmannGertraud Schusterpp. 118–121The diameter of the circumcircle of a Heron triangleRonald van Luijkpp. 122–125Mean value theorems for differencesJ. Marshall Ashpp. 126–136On the Miquel point of simplicesLothar Heinrichpp. 137–140Crossed ladders and power meansDag LukkassenRalph Høibakkpp. 141–144Flächen mit lauter NabelpunktenArno Paulypp. 145–149Aufgabenpp. 150–152Rezensionen
pp. 109–117Euclid, Calkin & Wilf — Playing with rationalsJörn SteudingStefanie HofmannGertraud Schuster
